| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Student Retention in Online, Open and Distance Learning | Hardcover | 978-1-138-42108-0 (1-138-42108-1) | 2017 |
| Student Retention in Online, Open and Distance Learning | Paperback | 978-0-7494-3999-6 (0-7494-3999-8) | 2003 |
| Supporting Students in Online, Open and Distance Learning | " | 978-0-7494-3740-4 (0-7494-3740-5) | 2002 |